I am attempting to create some figures which display regional (Destrieux atlas) values which are typically in the range of 0-10. I would like to have an inflated brain with those regional values overlaid, for both patients and healthy controls. In total there will be four independent figures. The problem I am having is that the range of values is different for each overlay e.g. overlay 1 regional value range from 0-3, overlay 2 regional values range from 0-8, which means that the colour scales are on different scales. I would like to find a way to manually set the scale to 0-10 for each overlay, regardless of the actual values that exist within the overlay file.

I am currently using the below command to load the overlay and then manually configuring the colour scale via the custom option, but I cannot add a point that is outside the range of values that exist in that overlay. I hope this makes sense and I would appreciate any advice you can give on how to achieve consistent colour scales for different overlays.

freeview -f /software/system/freesurfer/freesurfer-6.0.0/subjects/fsaverage/surf/rh.inflated:overlay=rh_pcnt_neg_control_01.mgz:overlay_method=linearopaque:overlay_threshold=0,5,10